Found 85 races near Larimer County, CO

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JUN
27

Bellvue Colorado
• 16.2 miles
Crisp morning air and a summer sunrise in Colorado. YES PLEASE! Join us on the foothills at Lory State Park for a fun & beautiful morning trail race experience. This run race features three...
5K 5m 10m
33
JUL
3

Granby, CO
• 47.8 miles
The course runs through Kaibab Park as well as downtown Granby! Start and finish areas are at the Destination Granby offices (516 East Agate Ave.). The course elevation is 7,935 feet. The run is...
5K
12
JUL
4

Boulder, CO
• 45.0 miles
$40 -$45
Join us for the 17th edition of the Avery Brewing Company 4K on the 4th, which is one of Boulder’s best running traditions to do on the 4th of July! July 4th is celebrated in a number of...
4K
5
JUL
4

Tabernash, CO
• 51.9 miles
Devil's Thumb Ranch is happy to present the first annual 5K/15K running race and walk that will start at Devil’s Thumb Ranch Resort & Spa. The course consists of gentle rolling hills and moderate...
5K 15K
10
JUL
4

Fort Collins, CO
• 23.1 miles
$10 -$55
Friday July 4th, 2026 Walk ⭐️ Jog ⭐️ Run ⭐️ Race Kick off your holiday festivities with a 5k in City Park, Fort Collins Start your Fourth of July with movement, community, and celebration at the...
5K
35
JUL
4

Greeley, CO
• 37.5 miles
$35 -$45
Celebrate the Fourth of July with run.Windsor in Greeley, Colorado as we bring back the annual July 4th Freedom 5k walk and run, along the Greeley Stampede 4th of July Parade Route! Participants...
5K
70
JUL
4

Louisville, CO
• 22.3 miles
$40 -$65
Let Freedom Run 5k/10k - Louisville in Louisville - 5K, 10K. Register today for this exciting race!
0m 5K 10K
235
JUL
4

Longmont, CO
• 40.5 miles
$40 -$55
Dress up as your favorite American Hero! This could be your mom, dad, Albert Einstein, Batman, Superman, or the Powerpuff girls! This event is all about celebrating GREAT people who do and have...
0m 5K
54
JUL
4

Red Feather Lakes, CO
• 10.2 miles
$40 -$50
Enjoy a scenic fun run in and around Red Feather Lakes, Colorado including a route through Fox Acres Golf Course! Start at and finish at The Tavern at Red Feather Lakes for an expo in the parking...
3m
44
JUL
6

Boulder, CO
• 47.6 miles
Nestled 5,430 feet above sea level, Boulder, Colorado is renowned as the heart of the running world, home to Olympic athletes and elite runners alike. This summer, experience the ultimate...
16
JUL
9

Boulder, CO
• 47.8 miles
$20
NO Race Day Registrations Fun for all, from newcomers of any age racing for the first time to veteran competitors looking to test their fitness, all in a friendly, welcoming environment. We are...
1m
9
JUL
11

Cheyenne, WY
• 47.1 miles
$25
The 12th annual Will Run for Cannoli 5k is a family fun run/walk and will be held on July 11, 2026 at Lions Park in Cheyenne. Participants can expect a fun course, age division prizes, raffles, a...
5K
30
JUL
19

Greeley, CO
• 40.6 miles
$20 -$40
This event raises essential funds to help veterans in our community who are experiencing challenges in their lives. As you complete the 5K course, you will receive a medal to commemorate your...
1m 5K
6
JUL
23

Boulder, CO
• 47.8 miles
$20
Fun for all, from newcomers of any age racing for the first time to veteran competitors looking to test their fitness, all in a friendly, welcoming environment. We are back at CU Potts...
10
JUL
24

Loveland, CO
• 29.0 miles
$25
Join us for the 3rd annual Flyin' Ryan Memorial 5k , a heartfelt event dedicated to honoring the memory of Ryan Vomacka, an exceptional athlete and individual who left an indelible mark on our...
5K
12
AUG
4

Fort Collins, CO
• 16.2 miles
$25 -$30
Join us August 5, 12, 19 & 26 for a fun series of shorter midweek trail races. Our goal is to offer a fun, low-key series of races designed to give newer trail runners an opportunity to dip their...
5K
21
AUG
6

Boulder, CO
• 47.8 miles
$20
NO Race Day Registrations Fun for all, from newcomers of any age racing for the first time to veteran competitors looking to test their fitness, all in a friendly, welcoming environment. Held at...
1m
9
AUG
7

Fort Collins, CO
• 21.5 miles
$26 -$110
Friday, August 7th, 2026 Jane Welzel Mountain Ave Mile Faster than Flat - point-to-point, slightly downhill mile on Mountain Avenue in Fort Collins, CO. Featuring multiple race waves:  Mountain...
5K 10K Half Marathon
14
AUG
8

Berthoud, CO
• 32.5 miles
$5 -$75
Eat. Run. Adopt. Join us for Berthoud’s first-ever community-driven 10k!  In partnership with Berthoud Pet Supply, this isn’t just a race—it’s a moving feast with a mission. A portion of race...
10K
35
AUG
11

Bellvue, CO
• 62.1 miles
$25 -$30
Join us August 5, 12, 19 & 26 for a fun series of shorter midweek trail races. Our goal is to offer a fun, low-key series of races designed to give newer trail runners an opportunity to dip their...
10K
20